It is the preparatory phase. Cell organelle replicate and size of the cell increases. DNA molecule undergoes replication. Each chromosome exists as a pair of chromatids joined together by a centromere.
Karyokinesis-Ι
Karyokinesis can be distinguished into four stages:
• Prophase Ι
• Metaphase Ι
• Anaphase Ι and
• Telophase. Ι